My 1995 Yamaha 115 2 stroke lower unit died. So I did what most people do I started Googling for a replacement. I found SEI and was satisfied that their product would work for me. Once it was ordered it was at my house fast, I happen to live here in FL so that helped I'm sure. The installation went quick and simple, and now I am going through the break in. So far this has been a very positive experience.